The baby name Casimiro appears in baby name data for the United States from 1912 to 1995. It was most popular in 1947 with 45 babies given the name.
Over the period shown, Casimiro has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 5 |
| 1915 | 10 |
| 1917 | 7 |
| 1918 | 10 |
| 1919 | 7 |
| 1920 | 7 |
| 1921 | 15 |
| 1922 | 9 |
| 1923 | 8 |
| 1924 | 6 |
| 1925 | 8 |
| 1926 | 8 |
| 1927 | 8 |
| 1928 | 8 |
| 1929 | 12 |
| 1930 | 9 |
| 1931 | 9 |
| 1939 | 6 |
| 1940 | 7 |
| 1941 | 9 |
| 1942 | 5 |
| 1943 | 5 |
| 1944 | 7 |
| 1945 | 5 |
| 1946 | 5 |
| 1947 | 45 |
| 1948 | 6 |
| 1949 | 7 |
| 1955 | 18 |
| 1957 | 14 |
| 1959 | 16 |
| 1960 | 10 |
| 1966 | 16 |
| 1967 | 10 |
| 1968 | 16 |
| 1970 | 5 |
| 1971 | 5 |
| 1973 | 5 |
| 1979 | 5 |
| 1982 | 5 |
| 1985 | 8 |
| 1986 | 5 |
| 1989 | 6 |
| 1995 | 5 |